#ifndef _PWM_H_ 
#define _PWM_H_

#include "stm32f10x.h"                  // Device header

void tim4_ch1_psc_change(u16 num);
void tim4_ch1_init(u16 per,u16 psc);
void tim4_ch2_init(u16 per,u16 psc);
void tim3_ch1_init(u16 per,u16 psc);
void tim3_ch3_init(u16 per,u16 psc);
void tim3_ch4_init(u16 per,u16 psc);
void pet_pwm_init();
#endif
